JP2014205234A - First connection part and tool connection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an improved first connection part and an improved tool connection device.SOLUTION: A first connection part (1) acts mutually with a second connection part (2) of the tool connection device. The first connection part (1) includes a first body (10) and a cone pin (11), and the cone pin (11) extends from the first body to an end surface (12) along a central axial line (x). The cone pin can be inserted into a cone seat (21). The cone pin includes a cave (13), and the cave (13) extends from the end surface and includes plural first salients (15), and the first salients (15) are disposed with constant distance in a circumferential direction with respect to the central axial line (x) in a separated state so that the corresponding number of first recesses (16) is formed. The first salients form respective first contact surface (18), and act mutually with the corresponding number of separated second contact surfaces (48) of a tension member (40) of the second connection part. The first contact surfaces form a sharp angle with the central axial line (x).

Description

  The present invention relates to a tool coupler for interconnecting a first coupling part and a second coupling part. This tool coupler is designed to quickly change a tool (for example, a cutting tool held in the first coupling part or the second coupling part). More precisely, the present invention relates to a first coupling part according to the preamble of claim 1 and a tool coupling according to the preamble of claim 10. Such a first connection is shown in Swedish patent application No. 303658.

  U.S. Pat. No. 6,193,451 discloses a tool coupler having a first connection that may have a conical pin and a second connection that may have a conical seat. The conical pin of the first connecting portion can be inserted into the conical seat of the second connecting portion, and the first connecting portion can be tightened in the conical seat using the tension member from the insertion position. The tension member is a member that acts on many segments. When the tension member is retracted, the segment to be actuated moves outward and meshes with the outer peripheral recess of the cavity of the conical pin. In this connection, the conical pin is drawn into the conical seat, and as a result, the support surface of the first connection portion is in contact with the corresponding support surface of the second connection portion in a plane perpendicular to the central axis of both connection portions. And lay flat. This tool coupler works very well and is used in many different machine tools. At the same time as both support surfaces abut against each other, the tension member presses the wall of the conical pin outward, so that the first coupling part is clamped very firmly in a precise predetermined position.

  However, the disadvantage of this solution is that many moving parts are stored at the boundary between the first connecting part and the second connecting part of the tool connector. Thus, dirt and particles can penetrate particularly into the segment area and contribute to the capture of the tool coupler or, in the worst case, to contribute to the interconnections being interconnected at relatively inaccurate positions. Yes, tool couplers are susceptible to such dirt and particles. In addition, small size tool couplers complicate the manufacture, handling and mounting of many parts to the tool coupler.

  The above-mentioned Swedish Patent Application No. 303658 provides a possible solution to such a complex problem and discloses a kind of bayonet coupling. This connector is intended to replace the segment of the tool connector according to U.S. Pat. No. 6,193,451 by means of a tension member which forms with the first connector in the cavity of the conical pin to form a plug connector. to enable. However, since the tool coupler shown in Swedish Patent Application No. 303658 is inaccurate, neither the axial direction nor the circumferential direction can guarantee the accurate positioning of the first coupling part with respect to the second coupling part. Become. The inventors of the present application have recognized that uncertainty arises with respect to the final position of the first connecting portion in the circumferential direction due to the fact that the first connecting portion rotates relative to the tension member. Furthermore, no specific axial connection is shown. That is, the axial position of the first connecting portion is not strictly defined.

  The object of the present invention is to avoid the above-mentioned problems and to provide an improved first connection and an improved tool connector. In particular, it aims at a tool coupler suitable for tools with relatively small dimensions.

  This object is achieved by a first connecting part, the presence of which is shown by introduction, and the first contact surface forms an acute angle with the central axis.

  By using the inclined first contact surface, the tension member can directly act on the first contact surface by the second contact surface corresponding to the first contact surface, and the first contact surface can be transferred to the second connecting portion. You can push backwards. The second contact surface of the tensile member of the second connecting portion can be introduced by the concave portion between the convex portion and the convex portion, and then the tensile member is rotated until the second contact surface is located on the opposite side of the first contact surface. be able to.

  Since the first contact surface has an acute angle, a radially outward force acting on the conical pin can be formed. This contributes to the outer surface of the conical pin being pressed against the conical inner surface of the seat, and at least contributing radially to the outside of the convex portion and the first contact surface.

  The pulling motion of the pulling member can be transmitted to the conical pin without mutual slip between the first contact surface and the second contact surface. This reduces wear and is an advantage over the technique shown in US Pat. No. 6,193,451 where slippage occurs between the tension member and the segment. Other similar solutions according to the prior art can also cause slip between the segment and the recess in the cavity of the conical pin.

  According to one embodiment of the present invention, each of the first protrusions has an inner surface facing the central axis, and a circumferential minimum extension along the inner surface, the minimum extension being , Smaller than the distance between the first protrusions. Thereby, the contact area between the first contact surface and the second contact surface can be increased as compared with the technique shown in Swedish Patent Application No. 303658. Since the second contact surface is inserted behind the first contact surface and rotated, and then pulled toward the first contact surface, the circumferential extension of the first contact surface is less than 180 ° and the same This also applies to the entire circumferential extension of the second contact surface.

  According to a further embodiment of the invention, the first contact surface is conical and thus may form a cone angle with the central axis. The cone angle is 30 to 60 °, for example 45 °.

  According to a further embodiment of the invention, the first body forms a first support surface around the conical pin, the first support surface contacting the second support surface of the second coupling part on the opposite side. Formed as follows. Advantageously, the first support surface may be flat and the central axis is perpendicular to the first support surface. In this way, when the first support surface is in contact with the second support surface, the first support surface ensures an accurate axial position of the first connection portion with respect to the second connection portion.

  According to a further embodiment of the present invention, the first connecting part is formed such that the conical pin can be fixed to the second connecting part at at least one predetermined rotational position about the central axis. In order to realize the fixing, the conical pin may have a polygonal pyramid shape, and the outer cross section of the conical pin with respect to the central axis may have a polygonal shape so that it can cooperate with the corresponding cross section of the conical seat of the second connecting portion. . The outer cross-section of the polygon may include 2, 3, 4, or more than 4 corners. Advantageously, the polygonal outer cross-section of the conical pin may include rounded corners, and the recesses may be arranged radially inside each rounded corner. Accordingly, the first convex portions are positioned radially inside the region between the rounded corners. In this region, the material thickness of the conical pin is somewhat thinner than the rounded corner. Thereby, the elasticity of the conical pin is improved in a region where the first contact surface and the second contact surface are pressed against each other.

  According to a further embodiment of the present invention, the cavity has an annular shape, and the first protrusion extends inwardly from the annular shape to the center.

  The object of the present invention is achieved by a tool coupler, the tool coupler being characterized by its introduction, characterized in that the first contact surface forms an acute angle with the central axis, and The two contact surfaces form an acute angle with the longitudinal axis.

  According to an embodiment of the present invention, the second connecting portion includes an operating mechanism, which enables the tension member to rotate from the first rotation position to the second rotation position about the longitudinal axis. Acts on the tension member. Here, the first contact surface and the second contact surface are positioned directly in front of each other and can be moved from the second rotational position to the connecting position in the longitudinal axis direction, and the first contact surface and the second contact surface are pressed against each other. Thus, the first connecting part and the second connecting part are connected to each other.

  According to a further embodiment of the invention, the tension member comprises a tension bar and a tension head, on which a second contact surface is arranged. Advantageously, the actuation mechanism may include an operating tool for manually rotating and moving the tension member, or may include a drive member for rotating and moving the tension member by machine or automation. Such a drive member may include an electric motor, a pneumatic motor, or a hydraulic motor.

  According to a further embodiment of the invention, the actuating mechanism comprises a control member, the control member comprising an engagement member accessible for the operating tool, the control member comprising a first tension member. In order to rotate between the rotational position and the second rotational position, it is rotatable about the longitudinal axis. Advantageously, the control member may be arranged in the second coupling part so as to be rotatable about an axis perpendicular to the longitudinal axis, the control member comprising an eccentric circumferential surface, The eccentric circumferential surface acts on the transverse opening of the tension member to move the tension member to the coupling position as described above.

  According to further embodiments of the present invention, the first coupling portion of the tool coupler may include one or more of the above features.

Hereinafter, the present invention will be described in more detail using descriptions of various embodiments with reference to the accompanying drawings.
1 shows a side view of a tool device with a tool and a tool coupler according to the invention. FIG. Sectional drawing in the cutting line II-II of FIG. 1 is shown. Fig. 3 shows a longitudinal section along the section line III-III in Fig. 2; FIG. 4 shows a longitudinal cross-sectional view along section line IV-IV in FIG. 2. Sectional drawing in the cutting line VV of FIG. 1 is shown. Sectional drawing in the cutting line VI-VI of FIG. 1 is shown. Sectional drawing in the cutting line VII-VII of FIG. 1 is shown. The perspective view of the parts which comprise the tool coupler of FIG. 1 is shown. FIG. 2 shows a partial cross-sectional view of the first connection part and the second connection part of the tool connector of FIG. 1 in an unconnected state. Sectional drawing of the longitudinal direction of the 1st connection part in a middle state and a 2nd connection part is shown. Sectional drawing of the longitudinal direction of the 1st connection part in the state connected and the 2nd connection part is shown. Sectional drawing of the 1st connection part in a 1st rotation position and a 2nd connection part is shown. Sectional drawing of the 1st connection part in a 2nd rotation position and a 2nd connection part is shown. Fig. 2 shows a first exploded view of the tool coupler of Fig. 1; Fig. 2 shows a second exploded view of the tool coupler of Fig. 1; 16-19 show perspective views of the tool coupler with the operating tool in various functional positions. 16-19 show perspective views of the tool coupler with the operating tool in various functional positions. 16-19 show perspective views of the tool coupler with the operating tool in various functional positions. 16-19 show perspective views of the tool coupler with the operating tool in various functional positions.

Detailed Description of Various Embodiments FIG. 1 illustrates a tool coupler having first and second interlocking portions that interact. The second connecting portion 2 has a front end portion 2 ′ and a rear end portion 2 ″. The rear end portion 2 ″ is formed to be attached to a machine tool (for example, an automated multifunction machine).

  As shown in FIG. 9, the first connecting portion 1 includes a front end portion 1 ′ and a rear end portion 1 ″. The front end portion 1 ′ includes, for example, a rotation insert, one or more milling inserts, It is formed to receive a tool 4 having one or more drilling inserts etc. This tool may be integrated into the first connecting part 1. The first connecting part 1 extends along the central axis x. (See FIGS. 3 and 4) The second connecting portion 2 extends along the longitudinal axis x ′, which is also the axis that forms the central axis of the second connecting portion 2.

  The first connecting portion 1 includes a first body 10 and a conical pin 11, and the conical pin 11 extends from the first body 10 to the end face 12 along the central axis x (FIGS. 8 and 9). See). In the embodiment shown, the first body 10 has a cylindrical cross section. The diameter of the conical pin 11 decreases from the first body 10 to the end surface 12. The conical pin 11 forms a certain conical angle with the central axis x over the entire outer periphery of the pin. This cone angle may be about 1-5 °. It is advantageous or essentially constant that the cone angle is constant over the entire circumference of the conical pin 11.

  The conical pin 11 includes a cavity 13 that extends from the end surface 12 to the bottom surface 14. The cavity 13 includes three first protrusions 15. These three first protrusions are separated from each other and are evenly distributed with a certain distance from each other along the circumferential direction with respect to the central axis x (see FIG. (See FIGS. 8, 12, and 13). There is a first concave portion 16 between the adjacent first convex portions 15 and 15. The first concave portions 16 are arranged such that the first concave portions 16 and the first convex portions 15 are alternately arranged in the circumferential direction. It should be noted here that the cavity 13 may include a number of first protrusions and first recesses other than three. For example, two first convex portions 15 and two first concave portions 16 or four, five, or six first convex portions 15 and first concave portions 16 may be included.

  The first convex portion 15 and the first concave portion 16 extend from the end surface 12 and are arranged at a position spaced apart from the bottom surface 14. Therefore, an inner space 17 of the cavity 13 exists between the bottom surface 14 and the first convex portion 15. Advantageously, the circumferential surface of the inner space 17 may be located at the same distance from the central axis x as the bottom surface of the first recess 16 and at essentially the same distance. In other words, the cavity 13 has an annular or cylindrical shape, and the first protrusion 15 may extend inward from the shape toward the central axis x.

  Each of the first convex portions 15 forms a first contact surface 18, and the first contact surface 18 faces the bottom surface 14 and forms an acute angle α with the central axis x (see FIG. 4). This acute angle may be 30-60 °, for example 45 °.

  Advantageously, the first contact surface 18 may be conical. The first contact surface may be slightly arcuate. That is, it may have a weak arch structure and a relatively large radius.

  Furthermore, each of the first protrusions 15 has an inner side surface 19 which faces the central axis line x and may advantageously be parallel to the central axis line x. The inner side surface 19 has a minimum extension in the circumferential direction along the inner side surface 19. The minimum extension is smaller than the distance between the first protrusions 15 and 15 or smaller than the width of the recess 16 in the circumferential direction.

  Further, the first body 10 forms a first support surface 10 ′ extending around the conical pin 11. The first support surface 10 'is flat. The central axis x is perpendicular or essentially perpendicular to the first support surface 10 '.

  The second connecting portion 2 includes the second body 20 and includes a flat second support surface 20 ′ at the position of the front end portion 2 ′. The major axis x ′ is perpendicular to the second support surface 20 ′. In the embodiment shown, the second body 20 has an elongated shape with a square cross section.

  The second connecting part 2 comprises a conical seat 21, which extends inward within the second body 20 and extends from the second support surface 20 'along the longitudinal axis x'. Extending rearward to part 2 ". The conical seat 21 forms some angle with the longitudinal axis x '. This angle is somewhat (100) more than the angle of the conical pin 11 with respect to the central axis x. In this way, it is realized that the conical pin 11 is determined slightly over the conical seat 21 and when the conical pin 11 is completely inserted into the conical seat 21. By press fitting, the position of the first support surface 10 ′ of the conical pin 11 is in contact with the conical seat 21 near the second support surface 20 ′, and the first support surface 10 ′ is in contact with the second support surface 20 ′.

  After the first connecting portion 1 and the second connecting portion 2 are interconnected, the conical pin 11 is inserted into the conical seat 21 so that the conical surface of the conical pin 11 and the conical surface of the conical seat 21 are in contact with each other. After further interconnecting steps (which will be described in more detail below), the first connecting part 1 to the second connecting part 2 until the first support surface 10 'is pressed against the second support surface 20'. Pull in.

  It should be noted that the first connecting portion 1 is formed so that the conical pin 11 can be fixed at a fixed rotational position with respect to the second connecting portion 2 at least one or more around the central axis x. It is good to do. In the illustrated embodiment, the outer cross-section of the conical pin 11 with respect to the central axis x is polygonal, and this cross-section interacts with the corresponding polygonal cross-section of the conical seat 21 of the second coupling part 2, so that this rotation Formula fixing is achieved. In the illustrated embodiment, and with particular reference to FIGS. 12 and 13, this polygonal cross-section of the conical pin 11 is triangular, with three rounded corners 31 and a more straight and rounded corner between these corners. It has a small number of three intermediate portions 32. The rounded corner 31 has a shorter or significantly shorter radius of curvature than the intermediate portion 32. As mentioned, the conical seat 21 has a corresponding polygonal shape, which has three rounded corners and three intermediate parts, as shown in FIGS.

  As shown in FIGS. 12 and 13, each of the rounded corners 31 of the conical pin 11 is arranged radially outside the respective first recess 16. That is, each of the first convex portions 15 of the conical pin 11 is radially arranged inside the respective intermediate portion 32.

  With particular reference to FIGS. 3, 4, 8, and 9, the second link comprises a tension member 40, which has a tension head 41 and a tension bar 42. The pulling head 41 includes three second protrusions 45, which are separated from each other and arranged at a certain distance from each other along the circumferential direction with respect to the longitudinal axis x ′. (See FIGS. 12 and 13). Accordingly, since the second concave portions 46 are present between the adjacent second convex portions 45 and 45, the three second convex portions 45 and the three second concave portions 46 are also alternately arranged in the circumferential direction around the tension head 41. Lined up.

  Each of the second protrusions 45 forms a second contact surface 48. Advantageously, the second contact surface 48 forms an angle with the longitudinal axis x ′ that is the same as the angle α.

  The second contact surface 48 may advantageously be conical like the first contact surface 16. Similarly, the second contact surface 48 may be arcuate. That is, it may have a weak arch structure and a relatively large radius. In particular, either the first contact surface 18 or the second contact surface 48 may be arcuate.

  In this way, the conical pin 11 is inserted into the conical seat 21 after the interconnection of the connecting parts 1 and 2. At the same time, the tension member 40 is inserted into the cavity 13 (see FIG. 10). At this time, the tension member 40 is in the first rotational position illustrated in FIG. Thereafter, the tension member 40 is rotated to the second rotational position illustrated in FIG. Thereafter, the tension member 40 is moved rearward toward the rear end portion 2 ″ of the second connecting portion 2 until the second contact surface 48 contacts the first contact surface 18. Thereafter, the tension member 40 is further moved rearward. By moving, the conical pin 11 is completely drawn into the conical seat 21. As a result, as shown in Fig. 11, the first support surface 10 'is in contact with the second support surface 20' at the coupling position. At the connecting position, the central axis x coincides with the longitudinal axis x ′.

  When the first contact surface 18 is pressed against the second contact surface 48, there is no or essentially no mutual slip between the surfaces 18 and 48. All the force from the tension head 41 is transmitted to the first contact surface 18 and the conical pin 11, and the conical pin 11 is pressed outward at the positions of the first convex portion 15 and the intermediate portion 32.

  The tension member 40 includes a main portion 43, which is disposed in the cylindrical cavity 23 of the second body 20 and is movable along the longitudinal axis x ′ in the cylindrical cavity 23. It can rotate around the axis line x ′. The tension member 40 further includes a transition portion 44 between the main portion 43 and the tension rod 42. As can be seen in FIG. 9, the sealing ring 25 is disposed in the annular groove 26 of the second body 20, and the sealing ring 25 is in sealing contact with the transition portion 44. In this way, the space around the tension head 41 in the conical seat 21 is sealed. By this sealing, dirt and a lubricant are prevented from entering the space from the cylindrical cavity 23 and the rear end portion of the second connecting portion 2. In addition, the coolant and dirt are prevented from entering the cylindrical cavity 23.

  As seen in FIGS. 14 and 15, the main portion 43 of the tension member 40 has two cylindrical surfaces 50 on opposite sides, and as shown in FIG. 5, the two cylindrical surfaces 50 are cylindrical cavities. 23. The main portion 43 also has two planes 51 on opposite sides. The two flat surfaces 51 are parallel to each other and extend between the two cylindrical surfaces 50 to connect the two cylindrical surfaces 50. A transverse opening 52 having an elongated shape extends through the main part 43 and the two planes 51.

  As described above, the tension member 40 can rotate, and more precisely, can rotate between the first rotation position and the second rotation position. The two rotational positions can be defined in various ways. The illustrated embodiment shows an example. In this connection, the tension member 40 comprises a pin 53. The pin 53 extends rearward toward the rear end portion 2 ″ and has a rectangular cross section. The pin 53 meshes with the concave portion 54 of the locking block 55 of the second connecting portion 2. The locking blocks 55 include four locking blocks 55. It fixes in a 2nd connection part using the screw 3. The cross section of the recessed part 54 has an elongate shape with which the waist part was narrowed, As FIG. Are defined, thereby defining the rotational position of the tension member 40. By using two balls located opposite to each other and inclined by each spring washer 57, the pin 53 is The tension members 40 are held at the first and second rotation positions, respectively, so that the tension member 40 is held at the first and second rotation positions.

  The second connecting part 2 also includes an operating mechanism. This actuating mechanism cooperates and interacts with the tension member 40 to provide movement and rotation of the tension member 40. The actuating mechanism includes a control member 61, which includes a meshing member 62 that is accessible for the operating tool 63.

  In the illustrated embodiment, the control member 61 has an eccentric circumferential surface 64, and has a cylindrical surface 65 on each side surface of the eccentric circumferential surface 64. The eccentric circumferential surface 64 is placed in the elongated hole 52 of the main portion 43. The two cylindrical surfaces 65 are held by the bearings in the cylindrical holes 66 of the respective bearing elements 67. The two bearing elements 67 are in contact with the respective flat surfaces 51 of the main portion 43. The two bearing elements 67 have circular outer surfaces, and the circular outer surfaces are connected to the cylindrical surface 50 of the main portion 43 and contact the cylindrical cavity 23.

In order to rotate the tension member 40 between the first rotation position and the second rotation position, the control member 61 can rotate about the longitudinal axis x ′ together with the tension member 43. This rotation is provided by the operating tool 63. Operation tool 63 is inserted into the meshing member 62, it is rotated in the direction of the arrow p ₁ around the longitudinal axis x '(see Figure 18). The engagement member 62 may include a hexagon hole, and the operation tool 63 may include a hexagon spanner.

The control member 61 can also rotate about a transverse axis y perpendicular to the longitudinal axis x ′ (see FIG. 4). When the control member 61 is rotated about the transverse axis y in the direction of the arrow p ₂ using the operation tool 63 (see FIG. 19), the eccentric circumferential surface 64 acts in the transverse opening 52 of the main portion 43. Then, the tension member 40 is moved along the longitudinal axis x ′. The movement range includes the position shown in FIG. 10 (position where the contact surface 18 and the contact surface 48 are not in contact with each other) and the position shown in FIG. 11 (position where the contact surface 18 and the contact surface 48 are pressed against each other). Between.

  Therefore, the interconnection of the first connecting part 1 and the second connecting part 2 can be performed quickly and easily. Here, after the conical pin 11 has been inserted into the conical seat 21, in the embodiment shown, the pulling head 41 is rotated by using the same tool 63 that rotates about the longitudinal axis x ′ with the operating tool 63. To do. Thereafter, the pulling head is pulled backward by the operation tool 63 that rotates (that is, rotates) around the transverse axis y.

  It should be noted that the actuating mechanism shown should be regarded as an advantageous embodiment of the mechanism for manually clamping the first connecting part 1 to the second connecting part 2. Such a manual actuating mechanism can be formed in many different ways, and in addition, the parts of the tension member 40 (for example, the main portion 43 with the pin 53, the pulling rod 42, and the transition portion 44) can be formed in many different ways. it can. It should be further noted that the actuating mechanism shown may be replaced by an actuating mechanism that drives the pulling head 41 via a pull rod, in which case the actuating mechanism connects the first coupling part 1 to the second. It is a point designed to be automatically tightened to the connecting portion 2.

  The invention is not limited to the embodiments shown, but may be varied and modified within the scope of the following claims.

α acute angle x central axis x ′ longitudinal axis y transverse axis p ₁ arrow p ₂ arrow 1 first connecting part 1 ′ front end part 1 ”rear end part 2 second connecting part 2 ′ front end part 2” rear end part 3 fixing means 4 Tool 10 1st body 10 '1st support surface 11 Conical pin 12 End surface 13 Cavity 14 Bottom surface 15 1st convex part 16 1st recessed part 17 Inner space 18 1st contact surface 19 Inner side surface 20 2nd body 20' 2nd support Surface 21 Conical seat 23 Cylindrical cavity 25 Sealing ring 26 Annular groove 31 Rounded corner 32 Intermediate part 40 Tension member 41 Tension head 42 Tension bar 43 Main part 44 Transition part 45 Second convex part 46 Second concave part 48 Second contact Surface 50 Cylindrical surface 51 Flat surface 52 Transverse opening 53 Pin 54 Recessed portion 55 Locking block 56 Ball 57 Spring washer 61 Control member 62 Engagement member 63 Operating tool 4 eccentric circumferential surface 65 cylindrical surface 66 cylindrical bore 67 bearing element

Claims (15)

A first coupling part (1) formed to interact with the second coupling part (2) of the tool coupler,
The first connecting part (1) includes a first body (10) and a conical pin (11), and the conical pin (11) extends from the first body (10) to a central axis (x ) Along the end surface (12) and the diameter decreases from the first body (10) to the end surface (12),
The conical pin (11) is formed so as to be insertable into the conical seat (21), and the conical seat (21) includes the central axis (x) and the longitudinal axis of the second connecting portion (2). Elongate along the longitudinal axis (x ′) such that (x ′) matches,
The conical pin (11) comprises a cavity (13) that extends from the end face (12) to the bottom face (14) and has several first protrusions (15). The first protrusions (15) are separated so as to form a corresponding number of first recesses (16), and are spaced apart from each other along the circumferential direction with respect to the central axis (x). Is arranged,
The first protrusions (15) are arranged at a certain distance from the bottom surface (14) and form respective first contact surfaces (18),
The first contact surface (18) is formed to interact with a corresponding number of separate second contact surfaces (48) of the tension member (40) of the second coupling part (2);
The first connecting part (1), wherein the first contact surface (18) forms an acute angle (α) with the central axis (x).   It is a 1st connection part of Claim 1, Comprising: Each of the said 1st convex part (15) follows the inner surface (19) which faced the said central axis (x), and the said inner surface (19). And a minimum extending portion extending in the circumferential direction, wherein the minimum extending portion is smaller than a distance between the first convex portions (15).   The first connecting part according to any one of claims 1 and 2, wherein the first contact surface (18) is conical.   It is a 1st connection part as described in any one of Claims 1-3, Comprising: The said 1st body (10) forms 1st support surface (10 ') around the said conical pin (11). The first connecting part is formed to be in contact with the second supporting surface (20 ') of the second connecting part (2) on the opposite side.   5. The first connecting part according to claim 4, wherein the first support surface (10 ′) is flat and the central axis (x) is perpendicular to the first support surface (10 ′). The first connecting part.   The first connecting part according to any one of claims 1 to 5, wherein the first connecting part (1) is at least one second connecting part centered on the central axis (x). A first connecting portion formed so that the conical pin (11) can be fixed at a predetermined rotational position with respect to (2).   7. The first connecting part according to claim 6, wherein the conical pin (11) cooperates with a corresponding cross section of the conical seat (21) of the second connecting part (2) in order to realize the fixing. A first connecting part having a polygonal outer cross section with respect to the central axis (x) so as to be able to.   8. The first connecting part according to claim 7, wherein the polygonal outer cross section of the conical pin (11) comprises rounded corners (31), each rounded corner ( 31) The 1st connection part by which each 1st recessed part (16) is radially arrange | positioned inside 31).   9. The first connecting portion according to claim 8, wherein the cavity (13) has an annular shape, and the first convex portion (15) extends from the annular shape toward the central axis (x). The 1st connection part extended in direction. A tool coupler comprising a first coupling part (1) and a second coupling part (2) formed to interact with each other,
The first connecting part (1) includes a first body (10) and a conical pin (11), and the conical pin (11) is formed along the central axis (x). Extending from (10) to the end face (12) and decreasing in diameter from the first body (10) to the end face (12);
The second connecting part (2) comprises a conical seat (21), the conical seat extends along the longitudinal axis (x ′) of the second connecting part (2),
The conical pin (11) can be inserted into the conical seat (21) so that the central axis (x) and the longitudinal axis (x ′) coincide.
The conical pin (11) comprises a cavity (13) that extends from the end face (12) to the bottom face (14) and has several first protrusions (15). The first protrusions (15) are separated so as to form a corresponding number of first recesses (16), and are spaced apart from each other along the circumferential direction with respect to the central axis (x). Is arranged,
The first protrusions (15) are arranged at a certain distance from the bottom surface (14) and form respective first contact surfaces (18),
The second connecting part includes a tension member (40) having a corresponding number of second convex parts (45), and the second convex part (45) is separated and has a corresponding number of second concave parts. (46) are arranged at a certain distance from each other along the circumferential direction with respect to the longitudinal axis (x ′),
The second protrusions (45) form respective second contact surfaces (48),
The second contact surface (48) is formed so as to be pressed against any one of the first contact surfaces (18) by using the tension member (40),
The first contact surface (18) forms an acute angle (α) with the central axis (x), and the second contact surface (48) is formed with the longitudinal axis (x ′). An acute angle (α) is formed between
Tool coupler.   11. The tool connector according to claim 10, wherein the second connecting portion includes an operating mechanism, and the operating mechanism is configured such that the tension member (40) is centered on the longitudinal axis (x ′). Acting on the tension member (40) to be rotatable from one rotation position to a second rotation position, the first contact surface and the second contact surface (18, 48) being positioned diametrically opposite each other; and It is movable in the direction of the longitudinal axis (x ′) from the second rotation position to the connection position, and the first contact surface and the second contact surface (18, 48) are pressed against each other, A tool coupler in which one coupling part (1) and the second coupling part (2) are connected to each other.   12. The tool connector according to claim 11, wherein the tension member (40) includes a tension bar (42) and a tension head (41), the second contact surface (48) on the tension head (41). ) Is arranged, the tool coupler.   13. The tool connector according to claim 12, wherein the operating mechanism includes a control member (61), the control member (61) includes a meshing member (62), and the meshing member includes Accessible for an operating tool (63), the control member (61) is adapted to move the longitudinal axis such that the tension member (40) rotates between the first and second rotational positions. A tool coupler that is rotatable about (x ′).   14. The tool connector according to claim 13, wherein the control member (61) has an axis (y) perpendicular to the longitudinal axis (x ′) in the second connection part (2). The control member (61) includes an eccentric circumferential surface (64) that is rotatably disposed in the center, and the eccentric circumferential surface is configured to move the pulling member (40) for the movement to the coupling position. Tool coupler acting on the transverse opening (52) of the tool.   The tool coupler according to any one of claims 10 to 14, wherein the first coupling part (1) comprises the features according to any one of claims 2-9.